I'm somewhat lost with the mixture of dots and commas, but:
-0.08 x 20.6² + 1.6 x 20.6 + 1
= -0.08 x 424.36 + 1.6 x 20.6 + 1
= -33.9488 + 32.96 + 1
= 0.0112
Multiply both sides by 4 (the denominator):
2 = x/4
2·4 = x
x = 8
101/2 ÷ 103/4 = 10-1/4 (subtract exponents)
= 1 / 101/4
If there were 15,304 trees remaining and another 282 young trees, there would be:
15,304 + 282 = 15,586 trees.
Substitue 0 for y in the equation, and solve for x.
(2 + 9x3 + 7x5 - 4x4) + (6x4 - 3x3 + 2 + 9x5)
Rearrage, placing like terms together:
(7x5 + 9x5) + (-4x4 + 6x4) + (9x3 - 3x3) + (2 + 2)
Simplify these terms:
16x5 + 2x4 + 6x3 + 4
Examples of quadratic functions:
y = 3x²
y = x² - 6x
y = -2x² + 15
y = 5x² - x + 9
Example of functions that are not quadratic:
y = 9
y = 6x
y = -x + 12
y = x³
What term must every quadratic have?
21.8x = -124.26
Divide both sides by 21.8:
x = -124.26/21.8 <--- calculator time!
A = ½·b·h
This is a monomial because it has only one term (terms are separated by plus or minus signs).
A monomial may have several variables if they are combined by multiplication.
There are many possibilities (provided they have enough weights of each size). I'll let you figure out the number of 5 gram weights needed in each possibility:
50 gm 25 gm 15 gm 5 gm
1 1 ?
1 2 ?
1 ?
3 ?
2 ?
2 1 ?
1 3 ?
1 4 ?
4 ?
5 ?
?
